From: "allan.m.miller@..." <allan.m.miller@...>
Date: 2006-09-12T16:40:36+09:00
Subject: newbie: yaml array of arrays

Hello,

I'm new to yaml, and yaml in Ruby.

I'm trying to create a yaml file in a text editor, one part of which
will consist of an array of of arrays.  The data structure I'm trying
to represent is:

[['a', 'b', 'c'], ['d', 'e', 'f'], ['g', 'h', 'i']]

an array of three arrays.

I've tried to create this yaml file in a text editor (test.cfg):

-- a
 - b
 - c
-- d
 - e
 - f
-- g
 - h
 - i

and read it in as follows

require 'yaml'
na = open('test.cfg') { |f| YAML.load(f) }

I get a load error:

$ ./test.rb
/usr/lib/ruby/1.8/yaml.rb:119:in `load': parse error on line 9, col -1:
`' (ArgumentError)
        from /usr/lib/ruby/1.8/yaml.rb:119:in `load'
        from ./test.rb:3
        from ./test.rb:3:in `open'
        from ./test.rb:3

The last line seems o be causing an ArgumentError.

I'm sure my approach is completely off - how does one represent an
array of arrays in yaml, and load it into a Ruby array of arrays?

Thanks.